Unit4 Topic1When was it invented Section B课件＋音频(共32张PPT)2023-2024学年仁爱版九年级英语上册

(共32张PPT)
Unit 4 Amazing Science
Section B
Topic 1
When was it invented
Review
( )1. I ___ play with telephone unless I finished his homework.
A. was allowed to B. was not allowed to C. allow to
( )2. We all know that paper ___wood.
A. is made of B. is made into C. is made from
( )3. This kind of machine ___in 2006.
A. is invented B. is made C. was invented
( )4. A(An)___is used for taking photos.
A .Camera B. Lift C. MP3 player
( )5 .We should spend more time ___because it’s too important.
A .to learn English B. learning English C. in English
I. Choose the right answer. You can do it.
B
C
C
A
B
1. The chopsticks are made _____ bamboo.
2. The red wine is made _____ grapes.
3. This delicious cake was made _____ my mother.
4. Glasses are made _____ glass.
5. Our group is made up _____ four students.
6. That kind of machine is made _____ China.
II. Fill in the blanks with the right preposition.
Review
of
from
of
of
by
in
Pre-listening
Let's play a guessing game.
Guess the inventions!
You can just stand up and say out your answers.
If you are right ,you can get 3 point.
It is made of metal and plastic.
It was first made in America around 1975.
When we travel, we usually take it with us.
It is used to take photos.
What is it
It is made of plastic.
It is very small and you can put it in your pocket.
It was made in America in 1973 first.
It is used for communicating.
You can also use it to call your friends, listen to
music, play games and so on.
What is it
It is very thin and light.
It was first made in China in Han Dynasty(汉朝).
It is made from wood.
It is used for writing on.
What is it
It is made of metal and glass.
It was made by Thomas Edison first.
When the room is dark, we can use it to make the room bright.
Do you know more about light bulbs
What is it
/b lb/
n. 电灯泡
While-listening
( ) 1. Where are Michael and Jane
A. In the science museum. B. At the school library.
C. In the zoo. D. In the park.
( ) 2. Which object（物品） is not mentioned in the conversation
A. Light bulb. B. Airplane.
C. Television. D. Radio.
( ) 3. How many things did Thomas Edison invent during his life
A. More than 2000. B. Less than 2000.
C. More than 200. D. Less than 200.
listen to 1a and choose the correct answers.
1b
A
C
A
In 1895 in 1903 in 1879
Can you match them
Read 1a and complete the table.
Invention Inventor Year
light bulb
Guglielmo Marconi
1903
radio
airplane
Thomas
Edison
Wilbur and
Orville Wright
1879
1895
1c
Michael: Look, a light bulb!
Jane: Yeah. It is widely used by people everywhere.
Do you know when it was invented
Michael: It was invented in 1879.
Jane: Who invented it
Michael: Thomas Edison. It’s said that he invented more than
two thousand things during his life.
Jane: What about the radio
Michael: The radio was invented by Guglielmo Marconi in 1895.
Jane, let’s go this way.
Look! An airplane, but it’s different from today’s.
Jane: Yes. It was invented by Wilbur and Orville Wright in 1903.
1a
Listen, look and say.
/ e ple n/
n. 飞机
/b lb/
n. 电灯泡
be different from 与.....不同
反义词组：be the same as
Can you get the information about light bulb now
The light bulb _____ widely ______ by people everywhere today. It _____ invented _____ 1879. It was invented _______ Thomas Edison.
___ ___ ____ ____ he invented more than two thousand things during his life.
is
used
was
in
by
It is said that
It’s said that... 据说......
during one’s life 在某人的一生中
Find out the key phrases from the dialogue.
1. 据说......
2. 超过，多于
3. 在某人的一生中
4. 走这边
5. 与......不同
6. 目的是；为了
7. 不但......而且......
（连接主语时遵循“就近一致”原则）
8. 受到.......的欢迎
It’s said that...
more than = over
during one’s life
go this way
be different from
so that + 句子
not only...but also...
be popular with sb.
Post-listening
Do you know how jeans were invented
Do you know how jeans were invented
2
Fill in the blanks with the proper forms of the given words.
The first jeans were produced in 1855. At that time, they ___________(not call ) jeans and they were just hard-wearing pants designed for workers. The pants _____________ (make ) of the brown cloth. This kind of cloth ______ usually ________(use) for making tents. Nowadays, their materials have been changed so that it feels more comfortable. And many different jeans styles _______ also ________(create). They ___________( design) not only for workers but also for teenagers and women. Later jeans are popular all over the world.
were not called
were made
was
used
are
created
are designed
adj. 耐磨的
3
Listen to the three passages. Match the pictures with the following information.
a.1926
b.1876
c.1885
C. Alexander Graham Bell
B. John Baird
A. Karl Benz
Invention
Inventor
Year
4a
Read the following words. Listen and check the vowels.
rocket cotton hospital model
satellite camera laptop plastic
4b
Listen and read the following sentences aloud, paying attention to the stress and intonation. Then use the words in 4a to make up similar conversations.
A: `When was the `digital camera `developed
B: It was `developed in the `1970s.
A: Is the `digital camera `developed in `Korea
B: `No.
A: `Where was it `developed
B: It was `developed in `Japan.
Language points
1. It’s said that he invented more than two thousand things during his life.
据说，爱迪生一生中有两千多种发明。
考点：
（1）It’s said that... “据说......”。类似的结构还有：
It’s reported that... “据报道......”
It’s well-known that... “众所周知......”
It’s believed that... “大家都相信......”
eg. It’s reported that more than 10 people were hurt in the car accident.
（2）during one’s life = in one’s life “某人的一生”
eg. Lu Xun wrote many famous articles in his life.
（3）invent v. “发明，创造”。
名词形式为invention “发明”，inventor “发明家”
练习：据说这位伟大的发明家一生中拥有许多发明。（翻译句子）
______ that this great _______ invented many _______ during _______ .
Language points
back
It’s said
inventor
inventions
his life
2. Let’s go this way. 让我们走这边。
考点：
（1）go this way “走这边”，相当于take/come this way。
eg. Go this way to the end, and you will find the history museum.
（2）in a ...way “以......方式”。
eg. You should learn English in a better way.
（3）by the way “顺便提一下”。
eg. By the way, do you know where the post office is
Language points
back
及时练习1:
1. _____ this way, you can finish your homework very soon.
A. By B. In C. / D. With
2. I saw some boys playing basketball on the road _____ my way to school
this morning.
A. in B. to C.on D. at
3. —_____ the way, what’s your favorite subject
—Math, I think.
A. By B. In C. On D. With
4. —Excuse me, where is Mr. Black’s office
— ______.
A. This way, please B. In this way, please
C. By the way, please D. Go to this way, please
B
back
C
A
A
3. Their materials have been changed so that it feels more comfortable.
它们的材料已经被改变，其目的是让人们感到舒适。
考点：
（1）have been chagned 意为“已经被改变”。此结构为现在完成时的被动语态。其结构为：
has/have been + 动词的过去分词
eg. The work has been finished by the workers.
Many trees have been cut down in the past few years.
（2）so that 意为“为了，目的是......”，引导目的状语从句，常与情态动词连用，也常与in order that, in order to等互换使用。
eg. Jim gets up early so that he can catch the early bus.
= Jim gets up early in order that he can catch the early bus.
= Jim gets up early in order to catch the early bus.
= Jim gets up early to catch the early bus.
Language points
back
及时练习2:
1.为了找到好工作，我们必须努力学习。（完成译句）
We must study hard ______ find good jobs.
= We must study hard ______ ______ ______ find good jobs
= We must study hard ______ ______ ______ we can find good jobs
= We must study hard ______ ______ we can find good jobs
2. My father got up early this morning ______ he can catch the plane.
A. in order B. in order to C. so that D. so as to
back
to
in order to
in order that
so that
C
summary
We learn: 1.Some words: bulb, airplane, hard-wearing,
Korea
2. Some phrases: be used by, more
than, be different from
3. Some sentences:
It’s said that he invented more than two
thousand things during his life.
We can: 1.Use the simple past passive voice:
Do you know when it was invented
It was invented in 1879.
2.Talk about the inventors of some great inventions.
Homework
Read 1a.
Memorize the useful expressions and key sentences which we learn today.
Finish Section B in your workbook.
Preview Section C.
Thank you!